--- a/src/p4l/models/data.py Thu Sep 12 18:21:05 2013 +0200
+++ b/src/p4l/models/data.py Thu Sep 12 18:24:28 2013 +0200
@@ -173,7 +173,7 @@
isMultilingual = models.BooleanField() #iiep:isMultilingual
def get_imprints_years(self):
- return sorted(set([i.imprintDate for i in self.imprints.all()]))
+ return sorted(set([i.imprintDate for i in self.imprints.all() if i.imprintDate]))
def __unicode__(self):
return "Record id %s { identifier: %s, uri: %s, editionStatement: %s, recordType: %s, isDocumentPart: %s, notes: %s, language : %s}" \